First Draft Genome Assembly of Root-Lesion Nematode Pratylenchus scribneri Generated Using Long-Read Sequencing
Deepika Arora1, Alvaro G Hernandez2, Kimberly K O Walden2
1Department of Plant Pathology, North Dakota State University, Fargo, ND 58105, USA.
International Journal of Molecular Sciences
|April 28, 2023
Summary
Researchers have sequenced the draft genome of the root-lesion nematode, *Pratylenchus scribneri*. This provides crucial genomic data for understanding plant-parasitic nematodes and improving crop protection strategies.
Area of Science:
- Nematology
- Genomics
- Plant Pathology
Background:
- Root-lesion nematodes (genus *Pratylenchus*) are significant plant-parasitic nematodes (PPNs) with a global presence.
- Despite their economic importance, genomic data for the *Pratylenchus* genus is limited.
- This study addresses the scarcity of genomic information for this key PPN group.
Purpose of the Study:
- To generate a draft genome assembly for *Pratylenchus scribneri*.
- To provide foundational genomic resources for *Pratylenchus* research.
- To enable future molecular studies on plant-nematode interactions.
Main Methods:
- PacBio Sequel IIe System with ultra-low DNA input HiFi sequencing workflow.
- Draft genome assembly using 500 *P. scribneri* individuals.
- Benchmarking Universal Single-Copy Ortholog (BUSCO) analysis and GenomeScope2/Smudgeplots for genome characterization.
Main Results:
- A draft genome assembly of 227.24 Mb with 276 contigs and an N50 of 1.72 Mb.
- 51,146 predicted protein sequences were identified.
- BUSCO analysis indicated 65.4% complete BUSCOs, and genome analysis suggested a diploid genome for *P. scribneri*.
Conclusions:
- The generated draft genome assembly of *Pratylenchus scribneri* is a valuable resource.
- This genomic data will advance research into host plant-nematode interactions.
- Facilitates the development of novel molecular strategies for crop protection against root-lesion nematodes.
